Study on the influence of dust collector on horizontal diffusion of coal production by shearer

In order to clarify the influence mechanism of different dust collector treated air volume on horizontal diffusion of coal cutting dust produced by shearer, a shearer airborne dust collector was designed based on the wind speed distribution characteristics around shearer at 7 m mining height fully mechanized mining face in a certain mine. Theoretical analysis, numerical simulation and experiment were adopted. This paper studies the effect of treating air volume of shearer airborne dust collector on horizontal diffusion of coal cutting dust produced by shearer. The results show that: For a fully mechanized mining face with a mining height of 7 m, the transverse diffusion of air volume to the pedestrian side of the support blocked by the shearer fuselage is up to 3 m³/s, and the treated air volume of the shearer airborne dust collector should be controlled within the range of three times the transverse diffusion of air volume, so that the transverse diffusion of coal cutting dust production by the shearer can be controlled by 55%-75%. Excessive air volume is easy to cause air flow against the working face on the pedestrian side of the support, and the dust migrating in the road of the scraper transport machine will cause adverse effects.